HardLabs

NeptuneESC

15jgme·NeptuneESC·NeptuneESC/NeptuneESC.kicad_pcb

NeptuneESC PCB layout, top view — open source AVR/Arduino board by 15jgme

About the NeptuneESC PCB

NeptuneESC is an open source AVR/Arduino PCB design by 15jgme, published on GitHub under the LGPL-3.0 license. It is a 2-layer board measuring 50 × 29 mm, with 60 components from 21 distinct parts.

Its main chip is the ATmega8A-AU, from the AVR/Arduino family. Other key parts include the ACS712xLCTR-20A. By type, the board carries 32 resistors, 11 capacitors, 9 transistors, 3 diodes, 2 ICs and 2 connectors.

It belongs with the robotics & motion designs in this gallery.

From the project

The goal of this project is to create the smallest possible SMD ESC module. Work is largely based of schematics provided by Blue Robotics in their BlueESC.

The design is made to be compatable with assembly and board fabrication from [JLCPCB]https://jlcpcb.com/

The current size is about 5cm by 2cm in a single PCB, and is designed to support motors used in midsized UAV applications.

As with the BlueESC, Neptune operates on tgy firmware and can be run off of an I2C connection, making it ideal for daisychaining and tinkering. Note that since this project was in active development tgy is no longer maintained, but the atmega8a-au should allow for a variety of different firmware if desired.

NeptuneESC, from the project README
From the project README

Main components on the NeptuneESC

ACS712xLCTR-20AATmega8A-AU

NeptuneESC bill of materials (BOM)

60 components, 21 distinct parts.

QtyPartRefs
1
ACS712xLCTR-20A
U1
1
ATmega8A-AU
U2
3
Q_NPN_BCE
Q1, Q2, Q3
6
AO4407A
Q4, Q5, Q6, Q7, Q8, Q9
1
16MHz
Y1
1
AVR-ISP-10
J7
1
Conn_01x03_Male
J8
3
D_Schottky
D1, D2, D3
4
100uF
C1, C2, C3, C4
3
0.1uF
C5, C7, C8
1
1nF
C6
3
C_Small
C9, C10, C11
1
470k
R1
6
10k
R2, R5, R6, R21, R26, R31
2
3.3k
R3, R8
1
10k NTC
R4
1
18k
R7
6
47k
R9, R10, R11, R15, R16, R17
6
4.7k
R12, R13, R14, R18, R23, R28
6
100
R19, R22, R24, R27, R29, R32
Show 1 more
QtyPartRefs
3
2.2k
R20, R25, R30

NeptuneESC design files

The KiCad project lives in the 15jgme/NeptuneESC repository on GitHub; these links point at the commit this page was built from.

NeptuneESC: common questions

What microcontroller does the NeptuneESC use?

The NeptuneESC is built around the ATmega8A-AU, from the AVR/Arduino family.

How big is the NeptuneESC PCB?

The NeptuneESC measures 50 × 29 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the NeptuneESC?

60 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the NeptuneESC design files?

From the 15jgme/NeptuneESC repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the NeptuneESC design in my own project?

Yes, under the terms of its LGPL-3.0 license, which 15jgme chose for the repository.

Can I test firmware for the NeptuneESC without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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